Q35Multiple choice
Find out the following in the electric circuit given in Figure 12.9
This question refers to a figure in the original PDF.
- (a)Effective resistance of two 8 Ω resistors in the combination
- (b)Current flowing through 4 Ω resistor
- (c)Potential difference across 4 Ω resistance
- (d)Power dissipated in 4 Ω resistor (e) Difference in ammeter readings, if any. Fig. 12.9 96 E XEMPLAR P ROBLEMS – SCIENCE
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(a) Effective resistance of two 8 Ω resistors in the combination
Hint: Hint— R = R1 R2 / (R1+ R2) = ¨ ¸ =4Ω ©8+8¹ § 8×8 · (b) 1 A. Hint— I = V/R = 8/(4)+ ¨ ¸ = 8/8 =1A ©8+8¹ (c) 4 V. Hint— V = IR = 1×4 = 4 V (d) 4 W. Hint— P= I2R = 12 × 4 = 4 W (e) No difference. Hint— Same current flows through each element in a series circuit. 166 E XEMPLAR P ROBLEMS – SCIENCE %*#26'4 ANSWERS /WNVKRNG%JQKEG3WGUVKQPU