C13 Electrical System: Resistance

Presentation

•

Science

•

8th Grade

•

Practice Problem

•

Hard

Leong Yew Sheng Nicholas

Used 5+ times

FREE Resource

4 Slides • 4 Questions

C13 Electrical System: Resistance

Using Ohm's law, how to calculate the resistance of a component?

Multiple Choice

A current of 2A is flowing in a circuit. More batteries are added to the circuit. Describe whether the current will be

more than 2A.

less than 2A.

remained the same.

Fill in the Blanks

A current of 2A is flowing in a circuit. The resistance of the component is 2Ω. Calculate the voltage of the power source.

Type answer...

Explanation

V = RI
V = 2 x 2 = 4V

Fill in the Blanks

A cell contained a voltage of 25V and a current is flowing through the circuit. The resistance across a lightbulb is 2Ω. Calculate the value of the current flowing through the lightbulb.

Type answer...

Explanation

V = RI
25 = 2 x I
I = 25/2
I = 12.5 A

Fill in the Blanks

A cell contained a voltage of 50V and a current of 2A is flowing through the light bulb in the circuit. Calculate the resistance of the lightbulb

Type answer...

Explanation

V = RI
50 = R x 2
R = 50/2 = 25 $\Omega$

C13 Electrical System: Resistance

Using Ohm's law, how to calculate the resistance of a component?

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