Question 4

In the circuit shown below, the series combination of three sources of emf is connected across a combination of three equal resistors, R, in series. Each emf is 1.5 V. The total power dissipated as thermal energy in the three resistors is 2.25 W. What is the value of R?

• A. 5.4 Ohm
• B. 1 Ohm
• C. 2 Ohm
• D. 0.67 Ohm
• E. 3 Ohm

Formula Sheet

Question 3

Question 5

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