OHM'SLAW AND COMBINATION OF RESISTANCES
Current Electricity

268423 In the circuit shown below, the cell has an emf of \(10 \mathrm{~V}\) and internal resistance of \(1 \mathrm{ohm}\) the other resistances are shown in the figure. The potential difference \(V_{A}-V_{B}\) is

1 \(\mathrm{CV}\)
2 \(4 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(-2 \mathrm{~V}\)
Current Electricity

268424 A uniform wire of resistance \(20 \Omega\) having resistance \(1 \Omega\) / m is bent in the form of circle as shown in fig. If the equivalent resistance between \(M\) and \(N\) is \(1.8 \Omega\), then the length of the shorter section is

1 \(2 \mathrm{~m}\)
2 \(5 \mathrm{~m}\)
3 \(1.8 \mathrm{~m}\)
4 \(18 \mathrm{~m}\)
Current Electricity

268425 If the voltmeter reads \(0.2 \mathrm{~V}\) and the ammeter reads \(0.101 \mathrm{~A}\), the resistance of the voltmeter is(in ohm)

1 500
2 1000
3 200
4 400
Current Electricity

268426 In the en then when both switches \(S_{1}, S_{2}\) are closed or opened. The value of resistance \(R\) is

1 \(200 \Omega\)
2 \(100 \Omega\)
3 \(400 \Omega\)
4 \(-300 \Omega\)
Current Electricity

268427 In the following diagram ammeter reading is \(4 \mathrm{~A}\), voltmeter reading is \(20 \mathrm{~V}\), the value of \(R\) is

1 \(\lt 5 \Omega\)
2 \(<5 \Omega\)
3 \(=5 \Omega\)
4 \(\leq 5 \Omega\)
Current Electricity

268423 In the circuit shown below, the cell has an emf of \(10 \mathrm{~V}\) and internal resistance of \(1 \mathrm{ohm}\) the other resistances are shown in the figure. The potential difference \(V_{A}-V_{B}\) is

1 \(\mathrm{CV}\)
2 \(4 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(-2 \mathrm{~V}\)
Current Electricity

268424 A uniform wire of resistance \(20 \Omega\) having resistance \(1 \Omega\) / m is bent in the form of circle as shown in fig. If the equivalent resistance between \(M\) and \(N\) is \(1.8 \Omega\), then the length of the shorter section is

1 \(2 \mathrm{~m}\)
2 \(5 \mathrm{~m}\)
3 \(1.8 \mathrm{~m}\)
4 \(18 \mathrm{~m}\)
Current Electricity

268425 If the voltmeter reads \(0.2 \mathrm{~V}\) and the ammeter reads \(0.101 \mathrm{~A}\), the resistance of the voltmeter is(in ohm)

1 500
2 1000
3 200
4 400
Current Electricity

268426 In the en then when both switches \(S_{1}, S_{2}\) are closed or opened. The value of resistance \(R\) is

1 \(200 \Omega\)
2 \(100 \Omega\)
3 \(400 \Omega\)
4 \(-300 \Omega\)
Current Electricity

268427 In the following diagram ammeter reading is \(4 \mathrm{~A}\), voltmeter reading is \(20 \mathrm{~V}\), the value of \(R\) is

1 \(\lt 5 \Omega\)
2 \(<5 \Omega\)
3 \(=5 \Omega\)
4 \(\leq 5 \Omega\)
Current Electricity

268423 In the circuit shown below, the cell has an emf of \(10 \mathrm{~V}\) and internal resistance of \(1 \mathrm{ohm}\) the other resistances are shown in the figure. The potential difference \(V_{A}-V_{B}\) is

1 \(\mathrm{CV}\)
2 \(4 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(-2 \mathrm{~V}\)
Current Electricity

268424 A uniform wire of resistance \(20 \Omega\) having resistance \(1 \Omega\) / m is bent in the form of circle as shown in fig. If the equivalent resistance between \(M\) and \(N\) is \(1.8 \Omega\), then the length of the shorter section is

1 \(2 \mathrm{~m}\)
2 \(5 \mathrm{~m}\)
3 \(1.8 \mathrm{~m}\)
4 \(18 \mathrm{~m}\)
Current Electricity

268425 If the voltmeter reads \(0.2 \mathrm{~V}\) and the ammeter reads \(0.101 \mathrm{~A}\), the resistance of the voltmeter is(in ohm)

1 500
2 1000
3 200
4 400
Current Electricity

268426 In the en then when both switches \(S_{1}, S_{2}\) are closed or opened. The value of resistance \(R\) is

1 \(200 \Omega\)
2 \(100 \Omega\)
3 \(400 \Omega\)
4 \(-300 \Omega\)
Current Electricity

268427 In the following diagram ammeter reading is \(4 \mathrm{~A}\), voltmeter reading is \(20 \mathrm{~V}\), the value of \(R\) is

1 \(\lt 5 \Omega\)
2 \(<5 \Omega\)
3 \(=5 \Omega\)
4 \(\leq 5 \Omega\)
Current Electricity

268423 In the circuit shown below, the cell has an emf of \(10 \mathrm{~V}\) and internal resistance of \(1 \mathrm{ohm}\) the other resistances are shown in the figure. The potential difference \(V_{A}-V_{B}\) is

1 \(\mathrm{CV}\)
2 \(4 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(-2 \mathrm{~V}\)
Current Electricity

268424 A uniform wire of resistance \(20 \Omega\) having resistance \(1 \Omega\) / m is bent in the form of circle as shown in fig. If the equivalent resistance between \(M\) and \(N\) is \(1.8 \Omega\), then the length of the shorter section is

1 \(2 \mathrm{~m}\)
2 \(5 \mathrm{~m}\)
3 \(1.8 \mathrm{~m}\)
4 \(18 \mathrm{~m}\)
Current Electricity

268425 If the voltmeter reads \(0.2 \mathrm{~V}\) and the ammeter reads \(0.101 \mathrm{~A}\), the resistance of the voltmeter is(in ohm)

1 500
2 1000
3 200
4 400
Current Electricity

268426 In the en then when both switches \(S_{1}, S_{2}\) are closed or opened. The value of resistance \(R\) is

1 \(200 \Omega\)
2 \(100 \Omega\)
3 \(400 \Omega\)
4 \(-300 \Omega\)
Current Electricity

268427 In the following diagram ammeter reading is \(4 \mathrm{~A}\), voltmeter reading is \(20 \mathrm{~V}\), the value of \(R\) is

1 \(\lt 5 \Omega\)
2 \(<5 \Omega\)
3 \(=5 \Omega\)
4 \(\leq 5 \Omega\)
Current Electricity

268423 In the circuit shown below, the cell has an emf of \(10 \mathrm{~V}\) and internal resistance of \(1 \mathrm{ohm}\) the other resistances are shown in the figure. The potential difference \(V_{A}-V_{B}\) is

1 \(\mathrm{CV}\)
2 \(4 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(-2 \mathrm{~V}\)
Current Electricity

268424 A uniform wire of resistance \(20 \Omega\) having resistance \(1 \Omega\) / m is bent in the form of circle as shown in fig. If the equivalent resistance between \(M\) and \(N\) is \(1.8 \Omega\), then the length of the shorter section is

1 \(2 \mathrm{~m}\)
2 \(5 \mathrm{~m}\)
3 \(1.8 \mathrm{~m}\)
4 \(18 \mathrm{~m}\)
Current Electricity

268425 If the voltmeter reads \(0.2 \mathrm{~V}\) and the ammeter reads \(0.101 \mathrm{~A}\), the resistance of the voltmeter is(in ohm)

1 500
2 1000
3 200
4 400
Current Electricity

268426 In the en then when both switches \(S_{1}, S_{2}\) are closed or opened. The value of resistance \(R\) is

1 \(200 \Omega\)
2 \(100 \Omega\)
3 \(400 \Omega\)
4 \(-300 \Omega\)
Current Electricity

268427 In the following diagram ammeter reading is \(4 \mathrm{~A}\), voltmeter reading is \(20 \mathrm{~V}\), the value of \(R\) is

1 \(\lt 5 \Omega\)
2 \(<5 \Omega\)
3 \(=5 \Omega\)
4 \(\leq 5 \Omega\)