EASY
12th CBSE
IMPORTANT
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Find the ammeter reading in the circuit shown in Fig.

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Important Questions on Current Electricity

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 1
A cell of emf 4 V and internal resistance 1 Ω is connected to a d.c. source of 10 V through a resistor of 5 Ω. Calculate the terminal voltage across the cell during charging.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 2
The potential difference across a cell is 1.8 V when a current of 0.5 A is drawn from it. The p.d. falls to 1.6 V when a current of 1.0 A is drawn. Find the emf and the internal resistance of the cell.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 3
A 9 V battery is connected in series with a resistor. The terminal voltage is found to be 8 V. Current through the circuit is measured as 5 A. What is the internal resistance of the battery?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 4
In the circuit shown in Fig, the resistance of the ammeter a is negligible and that of the voltmeter V is very high. When the switch S is open, the reading of voltmeter is 1.53 V. On closing the switch S, the reading of ammeter is 1.00 A and that of the voltmeter drops to 1.03 V. Calculate emf of the cell
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 4
In the circuit shown in Fig, the resistance of the ammeter a is negligible and that of the voltmeter V is very high. When the switch S is open, the reading of voltmeter is 1.53 V. On closing the switch S, the reading of ammeter is 1.00 A and that of the voltmeter drops to 1.03 V. Calculate value of R.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 4
In the circuit shown in Fig, the resistance of the ammeter a is negligible and that of the voltmeter V is very high. When the switch S is open, the reading of voltmeter is 1.53 V. On closing the switch S, the reading of ammeter is 1.00 A and that of the voltmeter drops to 1.03 V. Calculate internal resistance of the cell.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 5
The potential difference between the terminals of a battery of emf 6.0 V and internal resistance 1 Ω drops to 5.8 V when connected across an external resistor. Find the resistance of the external resistor.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Problems For Practice>Q 6
The potential difference between the terminals of a 6.0 V battery is 7.2 V when it is being charged by a current of 2.0 A. What is the internal resistance of the battery?