Electrical Engineering · Question Bank

DC Circuits

3 of 52 questions match. Answer in your head first, then check the solution.

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#1📜 EE Pre-Board March 2013📘 PowerhouseMedium

A certain copper wire has a resistance of 0.5 ohms when the length is 10m. What is the diameter in mils?

A57.3

B33

C29.4

D26

#2📜 EE Pre-Board March 2013📘 PowerhouseMedium

A 16-ohm resistor is connected in series with parallel combination of three resistors, R and 48 ohms. Determine R if the power consumed by the parallel connected resistor is equal to the power consumed by the 16-ohm resistor.

A6 ohms

B12 ohms

C24 ohms

D36 ohms

#3📜 EE Pre-Board March 2013📘 PowerhouseMedium

The power consumed by a heating element made of copper wire is 250 W at 220 V and 30 °C. What is the power consumed by the same element at 220 V and 100 °C? The temperature coefficient of the element at 30 °C is 0.004 per °C.

A274 W

B233.33 W

C215.25 W

D196.31 W

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