Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 3

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What is the resistance of voltmeter shown in the circuit?

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Important Questions on Current Electricity

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 4

In the circuit shown below, the ammeter reading will be independent of $R_{2}$ when

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 5

A galvanometer of resistance

95 Ω

shunted by a resistance of

5 Ω

gives deflection of

50

divisions when joined in series with a resistance of $20 \mathrm{k} \Omega$ and $2.0 \mathrm{V}$ accumulator. The current sensitivity of the galvanometer in division per $\mu \mathrm{A}$ is

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 6

In the meter bridge experiment, the null point is obtained at $N$ . The value of unknown resistance $X$ will be

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 7

In a potentiometer experiment, the balancing length for a cell was found to be

1.20 m

. Now, a resistance of

10 Ω

is connected across the terminals of this cell and the balancing length becomes

80 cm

. The internal resistance of this cell is

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 8

Two cells when connected in series are balanced on

6 m

on a potentiometer. If the polarity of one of these cell is reversed, they balance on

2 m

. The ratio of e.m.f. of the two cells is

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 9

In the potentiometer circuit shown, the galvanometer shows no deflection for $A D = 35 cm$ . The resistance of wire $A B$ is $18 Ω$ And its length is $50 cm$ . Calculate the emf $E$ Of the cell.

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 10

The power consumption by the circuit shown in figure at steady state is

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Gamma Question Bank for Engineering Physics>Chapter 17 - Current Electricity>Assignment>Q 11

Cell having an emf

ε

and internal resistance

r

is connected across a variable external resistance

R

. As the resistance

R

is increased, the plot of potential difference

V

across

R

is given by,