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⁞ Electrical and Electronics Engineering

Engineering ➤ Electrical and Electronics Engineering ➤ Ohms-Law
Question 1
Q1.  The formula to find I when the values of V and R are known is
 

Answer :  I = V/R


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Question 2
Q2.  An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately
 

Answer :  31 Ω


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Question 3
Q3.  Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 kΩ of resistance?
 

Answer :  5.9 mA


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Question 4
Q4.  How much resistance is required to limit the current from a 12 V battery to 3.6 mA?
 

Answer :  3.3 kΩ


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Question 5
Q5.  What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?
 

Answer :  230 Ω


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