1
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

36 cells each of internal resistance $0.5 \Omega$ and emf 1.5 V each are used to send current through an external circuit of $2 \Omega$ resistor. For getting maximum current, $n$ cells are combined in series in each row. If total number of such rows are $m$, then the value of $(n / m)$ will be

A
4
B
6
C
8
D
3
2
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

The maximum power rating of a $20 \Omega$ resistor is 2 kW . Then, it cannot be used with 300 V DC source because the

A
current drawn is very large and it can blow the fuse.
B
current drawn is very less and appliance does not work.
C
resistor may melt due to excessive heat.
D
None of the above
3
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

The magnitude of resistance $X$ in the circuit shown below in the figure, when no current flows through the $5 \Omega$ resistor, is

VITEEE 2024 Physics - Current Electricity Question 1 English

A
3$\Omega$
B
4$\Omega$
C
6 $\Omega$
D
8 $\Omega$
4
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

A constant voltage is applied between the two ends of a uniform metallic wire, Some heat is developed in it. The heat developed is halved if

A
both the length and the radius of the wire are halved
B
both the length and the radius of the wire are doubled.
C
The radius of the wire is doubled
D
The length of the wire is halved.
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