- B A 9 V Battery Is Connected To A Resistor Of 1 2 K22 Two Equal Lengths Of Copper Wire Are Used To Connect The Battery 1 (52.85 KiB) Viewed 47 times
b) A 9 V battery is connected to a resistor of 1.2 k22. Two equal lengths of copper wire are used to connect the battery to the resistor. Each copper wire has a resistance per unit length of 0.015 m 2 /m, a radius 0.15 mm and a length of 15 cm. i) 4 Explain why the voltage drop across both wires can be neglected compared to the voltage drop across the resistor. Use calculations to support your answer. Your answer must be less than 100 words. Obtain the current supplied by the battery. The free electron density in the wire is 7 x 1028 m². The current is changed to 5 mA. Obtain the drift velocity of the electrons. ii) 2 111) 4