In the circuit shown in the fig., R_(1): R_(2) : R_(3) = 4 : 1 : 2. (a) Will the current through R_(1) increase or decrease when a new resistance R_(4) is added in parallel to R_(2) ? (b) Change in current through R_(1) when R_(4) is added is found to be 0.2 A. Calculate the current through R_(4).

In the circuit shown in the fig., R_(1): R_(2) : R_(3) = 4 : 1 : 2. (

1.	In the circuit shown in the fig., R_(1): R_(2) : R_(3) = 4 : 1 : 2. (a) Will the current through R_(1) increase or decrease when a new resistance R_(4) is added in parallel to R_(2) ? (b) Change in current through R_(1) when R_(4) is added is found to be 0.2 A. Calculate the current through R_(4).
Answer» ANSWER :(a) INCREASE (B) `I_(4) = 1.4 A`

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In the circuit shown in the fig., R_(1): R_(2) : R_(3) = 4 : 1 : 2. (a) Will the current through R_(1) increase or decrease when a new resistance R_(4) is added in parallel to R_(2) ? (b) Change in current through R_(1) when R_(4) is added is found to be 0.2 A. Calculate the current through R_(4).

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