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50 E In Fig. 26.22, a battery of potential difference

V=16 \mathrm{~V}

is con...

May 8, 2024

a Answer

The electron moves from the positive end to the negative end of the battery.

a Solution

b Answer

The work done on the electron by the electric field is

2.56 \times 10^{-18}

joules.

b Solution

c Answer

The energy transferred to the thermal energy of the strip is

2.56 \times 10^{-18}

joules.

c Solution

Key Concept

Direction of electron movement in an electric field

Explanation

Electrons move from lower to higher electric potential, which is from the positive to the negative terminal in a circuit.

Key Concept

Work done on a charge by an electric field

Explanation

The work done on a charge in an electric field is the product of the charge and the potential difference it moves through, given by

W = qV

Key Concept

Energy transfer to thermal energy

Explanation

The work done on the electron by the electric field is converted into thermal energy in the resistive strip.