Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Ω resistor be the same as that across the parallel combination of 4Ω resistors? Give reason.
Circuit diagram consisting of a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination is as follows:
Net resistance connected in parallel R = 2 Ω
Since resistance of 2 Ω and effective resistance of parallel combination of two 4 Ω resistances in series , same current will flow through them and therefore potential difference will be same across the 2 Ω resistor as across the parallel combination of 4 Ω resistors.
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