1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Resistance n, each of r ohm, when connected in parallel give an equivalent resistance of R ohm. If these resistances were connected in series, the combination would have a resistance in ohms, equal to
A
n2R
B
R/n2
C
R/n
D
nR
2
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
when three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be
A
60 watt
B
180 watt
C
10 watt
D
20 watt
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
A coil of 40 henry inductance is connected in series with a resistance of 8 ohm and the combination is joined to the terminals of a 2 volt battery. The time constant of the circuit is
A
5 seconds
B
1/5 seconds
C
40 seconds
D
20 seconds
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The magnetic flux through a circuit of resistance R changes by an amount $$\Delta $$$$\phi $$ in a time $$\Delta $$t. Then the total quantity of electric charge Q that passes any point in the circuit during the time $$\Delta $$t is represented by
A
$$Q = {1 \over R}.{{\Delta \phi } \over {\Delta t}}$$
B
$$Q = {{\Delta \phi } \over R}$$
C
$$Q = {{\Delta \phi } \over {\Delta t}}$$
D
$$Q = R.{{\Delta \phi } \over {\Delta t}}$$