1. How much work is done in moving a charge of 2 C across two points having a potentialdifference of 12 V?
2. A wire of resistance R is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R then the ratio of resultant to the original will be?
3. A radio set draws a current of 0.36 A for 15 minutes. Calculate the amount of electriccharge that flows through the circuit.
4. Potential difference between two points of a wire carrying 2 ampere current is 0.1 volt.Calculate the resistance between these points.
5. A simple electric circuit has a 24 V battery and a resistor of 60 ohms. What will be the current in the circuit? The resistance of the connecting wires is negligible.
6.Find resistance between A and B in following network
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Problem 1:
ReplyDeleteA current of 0.5 A is flowing through the resistance of 10Ω.Find the potential difference between its ends.
Solution:
Current I = 0.5A.
Resistance R = 10Ω
Potential difference V = ?
V = IR
= 0.5 × 10
= 5V.
Problem :2
A supply voltage of 220V is applied to a 100 Ω resistor.Find the current flowing through it.
Solution
Voltage V = 220V
Resistance R = 100Ω
Current I = V = 220 = 2.2 A.
R 100
Problem : 3
Calculate the resistance of the conductor if a current of 2A flows through it when the potential difference across its ends is 6V.
Solution:
Curren t I = 2A.
Potential difference = V = 6.
Resistance R = V
I
= 6 .
2
= 3 ohm.
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