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AP® Physics C: E & M

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Connecting Resistors to Ensure Correct Operation of Light Bulb

APPHEM-HWRTYX

A student wires a $1\Omega$ device which is fused at 1A (it is cannot operate at currents above 1A) in series with a 6V battery. The only other electrical equipment available to this students is a large number of $2\Omega$ resistors.

How should she connect the $2\Omega$ resistors to ensure the correct operation of the light bulb?

A

The student can wire two $2\Omega$ resistors in series with the device.

B

The student can wire two $2\Omega$ resistors in parallel and then wire this combination in series with the device.

C

The student can wire two $2\Omega$ resistors in parallel and then wire this combination in series with the device and with another $2\Omega$ resistor.

D

The student can wire two $2\Omega$ resistors in parallel and then wire this combination in series with the device and with two $2\Omega$ resistors.

E

The student can wire three $2\Omega$ resistors in parallel and then wire this combination in series with the device and with another $2\Omega$ resistor.