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Worksheets

Name

Class

Date

Which factor will increase the electrical resistance of a conductor?

Shorter length

Larger cross-sectional area

Lower resistivity

Higher temperature

What does the symbol ρ (rho) represent in the formula $R=\rho \frac{l}{A}$ ?

Electric field

Resistivity of the material

Resistance of the wire

Power delivered

According to Ohm’s Law, what happens to the current if voltage increases while resistance stays constant?

Current decreases

Current increases

Current remains the same

Current becomes zero

A wire has a length of 2 m and a cross-sectional area of 0.5 mm². If resistivity increases, what happens to the resistance?

Resistance decreases

Resistance stays constant

Resistance increases

No effect

Which formula correctly represents Ohm’s Law?

$V=I^2R$

$I=\frac{V}{R}$

$V=\frac{I}{R}$

$R=VI$

If a circuit has 12 V and 4 Ω, what is the current?

2 A

3 A

6 A

48 A

Which pair correctly shows a direct relationship?

Voltage ↑, Current ↑

Resistance ↑, Current ↑

Voltage ↑, Resistance ↑

Resistance ↑, Voltage ↑

100 %

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