A voltage of 21.0V across the terminals of a device produces a current of 3.00 mA through the device. What is the resistance of the device?

Physics · College · Thu Feb 04 2021

Answered on

According to ohm's law ,that the voltage across a conductor is directly proportional to the current flowing through it. 

V = IR 

I = 3.00mA = 3 *10³ 

21 = 3*10³  × R 

R = 21/ 3×10³ 

R= 7000 ohm's 

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