as a resistance of 4.02, the potential di terminals of the cell is 1.0 V. h ifference (pa) What is the pd across the terminals of the cell when the resist the variable resistor is 12 Q? A 0.25 V B 0.75 V C 1.33 V D 1.50 V

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The cell in the circuit has an emf of 2.0 V. When the variable resistor
has a resistance of 4.0 N, the potential difference (pd) across the
terminals of the cell is 1.0 V.
What is the pd across the terminals of the cell when the resistance of
the variable resistor is 12 Q?
A
0.25 V
0.75 V
C 1.33 V
D 1.50 V
Transcribed Image Text:The cell in the circuit has an emf of 2.0 V. When the variable resistor has a resistance of 4.0 N, the potential difference (pd) across the terminals of the cell is 1.0 V. What is the pd across the terminals of the cell when the resistance of the variable resistor is 12 Q? A 0.25 V 0.75 V C 1.33 V D 1.50 V
Initially a charged capacitor stores 1600 µJ of energy. When the pd
across it decreases by 2.0 V, the energy stored by it becomes 400 µJ.
What is the capacitance of this capacitor?
A 100 µF
1600X 1o
800MF
B 200 µF
C.
C 400 µF
D 600 µF
Transcribed Image Text:Initially a charged capacitor stores 1600 µJ of energy. When the pd across it decreases by 2.0 V, the energy stored by it becomes 400 µJ. What is the capacitance of this capacitor? A 100 µF 1600X 1o 800MF B 200 µF C. C 400 µF D 600 µF
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