Calculate the value of the resistance R in the circuit shown in the fi

1.	Calculate the value of the resistance R in the circuit shown in the figure so that the current in the circuit is 0.2A. What would be the potential difference between points B and E?
Answer» Here, RBCD = 5Ω + 10Ω = 15Ω Effective resistance between B and E 1/R_BE = 1/30 + 1/10 + 1/15 => R_BE = 5Ω Applying Kirchhoff’s Law 5 × 0.2 + R × 0.2 + 15 × 0.2 = 8 – 3 => R =5Ω Hence V_BE = IR_BE = 0.2 × 5 = 1volt

Calculate the value of the resistance R in the circuit shown in the figure so that the current in the circuit is 0.2A. What would be the potential difference between points B and E?

Answer»

Here, RBCD = 5Ω + 10Ω = 15Ω
Effective resistance between B and E

1/R_BE = 1/30 + 1/10 + 1/15 => R_BE = 5Ω

Applying Kirchhoff’s Law
5 × 0.2 + R × 0.2 + 15 × 0.2 = 8 – 3

=> R =5Ω
Hence
V_BE = IR_BE
= 0.2 × 5 = 1volt

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Calculate the value of the resistance R in the circuit shown in the figure so that the current in the circuit is 0.2A. What would be the potential difference between points B and E?

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