1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A student measures the terminal potential difference (V) of a cell (of emf $$\varepsilon $$ and internal resistance r) as a function of the current (I) flowing through it. The slope, and intercept, of the graph between V and I, then respectively, equal
A
$$-$$ r and $$\varepsilon $$
B
r and $$-$$ $$\varepsilon $$
C
$$-$$ $$\varepsilon $$ and r
D
$$\varepsilon $$ and $$-$$ r
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
AIPMT 2008 Physics - Current Electricity Question 72 English
In the circuit shown, the current through the 4 $$\Omega $$ resistor is 1 amp when the points P and M are connected to a d.c. voltage source. The potential difference betwen the points M and N is
A
0.5 volt
B
3.2 volt
C
1.5 volt
D
1.0 volt
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
A wire of a certain material is stretched slowly by ten percent. Its new resistance and specific resistance become respectively
A
both remain the same
B
1.1 times, 1.1 times
C
1.2 times, 1.1 times
D
1.21 times, same
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water from temperature 20oC ? The temperature of boiling water is 100oC
A
12.6 min
B
4.2 min
C
6.3 min
D
8.4 min
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