Formula :
1. What is the resistance in a circuit that has a current of 0.75A and a voltage drop of 60V across the cell?
Given : I = 0.75 A
V= 60Volt
Find R =…?
Solution
R = V : I = 60 Volt : 0.75A = 80 Ω
2.
What is the voltage drop
across an alarm clock that is connected to a circuit with a current of 1.10A
and resistance of 90Ω?
Given : I = 1.1 A
R = 90 Ohm
Find V: ….?
Solution:
V = I.R
=
1.1 A x 90 Ω
= 99
Volt
3.
What is the current in a circuit that has a resistance of 75Ω and a voltage drop of
120V across the cell?
Given :
R = 75 Ω
V = 120 Volt
Find : I = ….?
Solution:
I = V/R = 120 Volt : 75 Ω
= 1.6
A
4.
What is the voltage drop
across a TV that has a resistance of 150Ω and a current of 1.2A?
Given :
R = 150 Ω
I = 1.2
A
Find V=….?
Solution
V = I.R
=
1.2 A x 150 Ω
=
180 Volt
5.
What is the resistance
in a circuit that has a current of 2.5A and a voltage drop of 90V?
Given :
V = 90 Volt
I = 2.5 A
Find : R: …..?
Solution:
R = V: I = 90 Volt : 2.5 A = 36 Ω
6.
What is the current in a circuit that has a resistance of 65Ω and a voltage drop of 135V across a light
bulb?
Given
:
R =
65 Ω
V =
135 Volt
Find
: I = …?
Solution:
I =
V : R = 135 Volt : 65 Ω = 2.08 A
