Current Electricity PYQs - Last 10 Years

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Practice 159 MHT CET Physics questions from Current Electricity. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Last 10 Years Current Electricity Questions

Showing 50 of 159 filtered questions.

1Current Electricity

The potential difference $\left(V_A-V_B\right)$ between the points A and B in the given figure is

2Current Electricity

A null point is obtained at 200 cm on potentiometer wire when cell in secondary circuit is shunted by $5 \Omega$. When a resistance of $15 \Omega$ is used for shunting, null point moves to 300 cm . The internal resistance of the cell is

3Current Electricity

The reading of the ammeter in the following circuit is

4Current Electricity

Only $4 \%$ of the total current in the circuit passes through a galvanometer. If the resistance of the galvanometer is G , then the shunt resistance connected to the galvanometer is

5Current Electricity

If the length of the potentiometer wire is increased by keeping constant potential difference across the wire, then

6Current Electricity

If only $5 \%$ of the total current is to be passed through galvanometer of resistance G , then the resistance of the shunt will be

7Current Electricity

The scale of a galvanometer is divided into 160 equal divisions. The galvanometer shows full scale deflection of 16 mA and maximum voltage is 80 mV . Now the range is changed so that galvanometer reads 160 V . The required resistance to be ...

8Current Electricity

To determine the internal resistance of a cell with potentiometer, when the cell is shunted by a resistance of $5 \Omega$ the balancing length is 250 cm . When the cell is shunted by $20 \Omega$, the balancing length of potentiometer wire i...

9Current Electricity

Two cells $E_1$ and $E_2$ having equal e.m.f ' $E$ ' and internal resistances $r_1$ and $r_2\left(r_1>r_2\right)$ respectively are connected in series. This combination is connected to an external resistance ' R '. It is observed that the ...

10Current Electricity

In an ammeter, $4 \%$ of the main current is passing through the galvanometer, If shunt resistance is $5 \Omega$, then resistance of galvanometer will be

11Current Electricity

When the two known resistance ' $R$ ' and ' $S$ ' are connected in the left and right gaps of a meter bridge respectively, the null point is found at a distance ' $l_1$ ' from the zero end of a meter bridge wire. An unknown resistance ' X '...

12Current Electricity

In the following circuit, the reading in the ammeter is

13Current Electricity

Potential difference between the points A and B is nearly

14Current Electricity

Two identical galvanometers are converted into voltmeter and millivoltmeter. As compared to the series resistance of voltmeter, the series resistance of millivoltmeter will be

15Current Electricity

A potentiometer wire of length 1 m is connected in series with $495 \Omega$ resistance and 2 V battery. If $0.2 \mathrm{mV} / \mathrm{cm}$ is the potential gradient, then the resistance of the potentiometer wire is

16Current Electricity

In a meter bridge experiment, the balance point is obtained if the gaps are closed by $2 \Omega$ and $3 \Omega$. A shunt of $\mathrm{X} \Omega$ is added to $3 \Omega$ resistor to shift the null point by 22.5 cm. The value of ' $x$ ' is

17Current Electricity

In a Wheatstone's bridge, the resistances in four arms are as shown in the figure. The balancing condition of the bridge is

18Current Electricity

When a galvanometer is shunted by a resistance ' $s$ ', its current capacity increases ' $n$ ' times. If the same galvanometer is shunted by another resistance ' $s_1$ ', its capacity will increase to ' $n_1$ ' times original current. The v...

19Current Electricity

In the following circuit, a power of 50 watt is absorbed in the section AB of the circuit. The value of resistance ' $x$ ' is

20Current Electricity

The range of voltmeter of resistance ' $G$ ' $\Omega$ is ' $V$ ' volt. The resistance required to be connected in series with it in order to convert it into a voltmeter of range ' $n V$ ' volt, will be

21Current Electricity

Resistances in the left gap and right gap of a meter bridge are $10 \Omega$ and $30 \Omega$ respectively. If the resistances in the two gaps are interchanged, the balance point will shift to right by

22Current Electricity

When a galvanometer is shunted by a resistance ' $S$ ', its current capacity increases ' $n$ ' times. If the same galvanometer is shunted by another resistance $\mathrm{S}^{\prime}$, its current capacity increases to $\mathrm{n}^{\prime}$. ...

23Current Electricity

A galvanometer of resistance ' $G$ ' is shunted by resistance of 'S' ohm. To keep the main current in the circuit unchanged the resistance to be put in series with Galvanometer is

24Current Electricity

The resistances in the left and right gap of a metre bridge are $40 \Omega$ and $60 \Omega$ respectively. When the bridge is balanced, the distance of the null point from the centre of the wire towards left is

25Current Electricity

In the following circuit, the current flowing through zener diode is

26Current Electricity

In the following circuit, the current $\mathrm{I_2}$ is

27Current Electricity

When cell of E.M.F. ' $E_1$ ' is connected to potentiometer wire, the balancing length is $l_1$. Another cell of E.M.F. ' $E_2$ ' $\left(E_1>E_2\right)$ is connected so that two cells oppose each other, then the balancing length is $l_2$. T...

28Current Electricity

The current flowing in a coil is 3 A and the power consumed is 108 W . If the a.c. source is of $120 \mathrm{~V}, 50 \mathrm{~Hz}$, the resistance in the circuit is

29Current Electricity

The potential difference $\left(V_A-V_B\right)$ between the points A and B in the given part of the circuit

30Current Electricity

When a resistance of $100 \Omega$ is connected in series with a galvanometer of resistance G , its range is V . To double its range a resistance of $1000 \Omega$ is connected in series. The value of G is

31Current Electricity

When a resistance of $200 \Omega$ is connected in series with a galvanometer of resistance ' $G$ ', its range is ' $V$ '. To triple its range, a resistance of $2000 \Omega$ is connected in series. The value of ' $G$ ' is

32Current Electricity

Two identical galvanometers are converted into an ammeter and into milliammeter. For the same current, the value of shunt of the ammeter as compared to that of milliammeter is

33Current Electricity

A galvanometer has resistance $80 \Omega$ and it is shunted with resistance $20 \Omega$. If $20 \%$ of the main current flows through galvanometer, then what is the value of main current?

34Current Electricity

A cell balances against a length of 150 cm on a potentiometer wire when it is shunted by a resistance of $5 \Omega$. But when it is shunted by a resistance of $10 \Omega$, then balancing length increases by 25 cm . The balancing length when...

35Current Electricity

The figure shows currents in a part of electric circuit. Then current I is

36Current Electricity

A galvanometer may be converted into ammeter or a voltmeter. In which of the following cases the resistance of the device so obtained will be the largest?

37Current Electricity

The current drawn from the battery in the given network is (Internal resistance of the battery is negligible)

38Current Electricity

In the following electrical network, the value of I is

39Current Electricity

Kirchhoff's second law is based on the law of conservation of

40Current Electricity

A battery of 6 V is connected to the ends of uniform wire 3 m long and of resistance $100 \Omega$. The difference of potential between two points 50 cm apart on the wire is

41Current Electricity

In the circuit, current flowing through the circuit is

42Current Electricity

In potentiometer experiment, cells of e.m.f. $E_1$ and $E_2$ are connected in series $\left(E_1>E_2\right)$ the balancing length is 80 cm of the wire. If the polarity of $E_2$ is reversed, the balancing length becomes 20 cm. The ratio $\mat...

43Current Electricity

In an ammeter, $0.25 \%$ of main current passes through the galvanometer. If the resistance of the galvanometer is ' G ', the resistance of ammeter will be

44Current Electricity

The potential difference $\left(V_A-V_B\right)$ between the points ' $A$ ' and ' $B$ ' in the given part of the circuit is

45Current Electricity

In a meter bridge experiment null point is obtained at \(l \mathrm{~cm}\) from the left end. If the meter bridge wire is replaced by a wire of same material but twice the area of across-section, then the null point is obtained at a distance

46Current Electricity

A galvanometer of resistance \(\mathrm{G}\) is shunted with a resistance of \(10 \%\) of \(\mathrm{G}\). The part of the total current that flows through the galvanometer is

47Current Electricity

Five current carrying conductors meet at a point '\(\mathrm{O}\)' as shown in figure. The magnitude and direction of the current in conductor '\(O P\)' is

48Current Electricity

A galvanometer of resistance \(20 ~\Omega\) gives a deflection of 5 divisions when \(1 \mathrm{~mA}\) current flows through it. The galvanometer scale has 50 divisions. To convert the galvanometer into a voltmeter of range 25 volt, we shoul...

49Current Electricity

Five current carrying conductors meet at point \(\mathrm{P}\). What is the magnitude and direction of the current in conductor \(\mathrm{PQ}\)?

50Current Electricity

A wire of length \(3 \mathrm{~m}\) connected in the left gap of a meter-bridge balances \(8 \Omega\) resistance in the right gap at a point, which divides the bridge wire in the ratio \(3: 2\). The length of the wire corresponding to resist...