1) The voltage at the terminals of a battery is 62V when no load is connected, and 57V when a load taking a current of 100A is connected.
Determine the internal resistance of the battery.

2)A battery of emf 24V and internal resistance 0.5O is connected across a load of resistance 11.5O.
Determine the terminal voltage of the battery.

3) In the circuit described above in Question2, calculate the energy wasted in the internal resistance of the battery over 15 minutes duration.

4)The circuit shown below consists of four resistors R1, R2, R3 and R4, connected to a DC supply of emf 20V.
Ignoring any internal resistance of the supply, calculate the total resistance of the circuit, current and energy consumed in resistor R3 ( Image attached)

Thanks

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