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A student is using a 68 ohm resistor to build a circuit with a voltage source. If the student needs 0.72 amperes of current to flow through the resistor, what voltage should be used?
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A student is using a 68 ohm resistor to build a circuit with a voltage source. If the student

needs 0.72 amperes of current to flow through the resistor, what voltage should be used?

User Andre Bossard
by
5.0k points

1 Answer

5 votes

Answer:

48.96V

Step-by-step explanation:

Given parameters:

Resistance = 68Ω

Current = 0.72A

Unknown:

Voltage = ?

Solution:

According to ohm's law;

V = IR

V is the voltage

I is the current

R is the resistance

Now insert the parameters and solve;

V = 68 x 0.72 = 48.96V

User Javier Toja
by
4.5k points
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