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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A fuse F1 is connected across a source of variable voltage and the voltage is increased gradually. The fuse blows out just when the reading of the voltmeter and ammeter reaches 1.0Vand1.0A respectively (see figure (i)). The experiment is repeated with another fuse F2 and the reading of the voltmeter and ammeter when it blows out is 2.4Vand1.2A respectively. (a) The two fuses are connected in parallel as shown in figure (ii). Voltage is increased gradually. find the reading of the ammeter when any one of the fuses blows out. (b) The two fuses are connected in series as shown in figure (iii). find the reading of the voltmeter at the point one of the fuses blows out.

A fuse F1 is connected across a source of variable voltage and the voltage is increased gradually. The fuse blows out just when the reading of the voltmeter and ammeter reaches 1.0Vand1.0A respectively (see figure (i)). The experiment is repeated with another fuse F2 and the reading of the voltmeter and ammeter when it blows out is 2.4Vand1.2A respectively. (a) The two fuses are connected in parallel as shown in figure (ii). Voltage is increased gradually. find the reading of the ammeter when any one of the fuses blows out. (b) The two fuses are connected in series as shown in figure (iii). find the reading of the voltmeter at the point one of the fuses blows out.

In the circuit shown in figure AB is a uniform wire of length L = 5 m. It has a resistance of 2Ω/m. When AC=2.0 m In the circuit shown in the figure: it was found that the galvanometer shows zero reading when switch s is placed in either of the two positions 1 or 2. find the emf E1.