COMEDK 2025 Afternoon Shift | Current Electricity Question 8 | Physics

A galvanometer of $50 \Omega$ resistance is converted into an ammeter using a shunt resistance of $10 \Omega$. If the same resistance is used to convert the same galvanometer in to a voltmeter, what would be the ratio of the resistance of the ammeter to the resistance of the voltmeter?

$5: 1$

$5: 36$

$5: 6$

$1: 5$

COMEDK 2025 Afternoon Shift

MCQ (Single Correct Answer)

-0

The resistance of the conductor is $\sqrt{3} \Omega$ the angle made by the V-I graph with the voltage axis is $\theta$

$\theta=60^{\circ}$

$\theta=30^{\circ}$

$\theta=15^0$

$\theta=45^{\circ}$

COMEDK 2025 Afternoon Shift

MCQ (Single Correct Answer)

-0

Across the 220 V source of internal resistance $20 \Omega$, how many lamps of $40 \mathrm{~W}, 100 \mathrm{~V}$ can be connected in parallel so that all the lamps may glow with full brightness.

COMEDK 2025 Afternoon Shift

MCQ (Single Correct Answer)

-0

Two wires A and B made of same material having length 10 cm and 40 cm respectively are connected in parallel to the same source of emf 10 V . What will be the ratio of the drift velocity of the electrons in the wire $A$ to the drift velocity in the wire $B$ ?

$\frac{V_{d A}}{V_{d B}}=1: 4$

$\frac{V_{d A}}{V_{d B}}=1: 2$

$\frac{V_{d A}}{V_{d B}}=4: 1$

$\frac{V_{d A}}{V_{d B}}=2: 1$

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