indus valley civilization
TRANSCRIPT
1. What is a simpler way of expressing: (i) 0.000 005 A and (ii) 3 000 000 V? 2. A potential difference (p.d) of 6V causes a current of 0.6 A in a conductor.
Calculate the resistance of the conductor. 3. Find the p.d required to pass a current of 5A through a conductor having
resistance=8 Ohms. 4. A 960 Ohms lamp is connected to a 240V supply. Calculate the current in
the lamp and its power consumption. 5. A p.d of 1.35V causes a current of 465 micro-‐Amperes to flow in a
conductor. Calculate the resistance of the conductor. 6. An accidental short circuit to a 240V supply is caused by the connection of
a component of 8.5 milli-‐Ohms across the supply terminals. What will be the short circuit current?
7. What is the voltage across an electric heater of 5-‐Ohms through which passes a current of 22A?
8. A p.d of 12V is applied to a 7.5-‐Ohms resistor for a period of 5 seconds. Calculate the electric charge (in Coulombs) transferred in this time period.
9. A voltage of 20V is required to cause a current of 2A to flow in a resistor of resistance 10-‐Ohms. What voltage will be required to flow the same amount of current if the resistance were 40-‐Ohms.