Question:
In the figure given, the electric current flowing through the 5 \(\mathrm{k\Omega}\) resistor is 'x' mA.
The value of x to the nearest integer is ____________.
In the figure given, the electric current flowing through the 5 \(\mathrm{k\Omega}\) resistor is 'x' mA.
The value of x to the nearest integer is ____________.
The value of x to the nearest integer is ____________.
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The three 3 k\(\Omega\) resistors are in parallel; this bank is in series with the 5 k\(\Omega\) resistor and the 1 k\(\Omega\) internal resistance.
Updated On: Nov 4, 2026
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Correct Answer: 3
Solution and Explanation
The three 3 k\(\Omega\) resistors are in parallel: \(R_p = \frac{3}{3} = 1\ \mathrm{k\Omega}\).
This bank is in series with the 5 k\(\Omega\) resistor and the 1 k\(\Omega\) internal resistance of the 21 V cell.
\(R_{total} = 5 + 1 + 1 = 7\ \mathrm{k\Omega}\).
\(I = \frac{21\ \mathrm{V}}{7\ \mathrm{k\Omega}} = 3\ \mathrm{mA}\).
The whole current flows through the 5 k\(\Omega\) resistor, so \(x = 3\).
Answer: 3
This bank is in series with the 5 k\(\Omega\) resistor and the 1 k\(\Omega\) internal resistance of the 21 V cell.
\(R_{total} = 5 + 1 + 1 = 7\ \mathrm{k\Omega}\).
\(I = \frac{21\ \mathrm{V}}{7\ \mathrm{k\Omega}} = 3\ \mathrm{mA}\).
The whole current flows through the 5 k\(\Omega\) resistor, so \(x = 3\).
Answer: 3
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