Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The fall of potential per km is 8 volt and the average resistance per km is 0.5 $$\Omega $$. The power loss in the wire is
A
19.2 W
B
19.2 kW
C
19.2 J
D
12.2 kW
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Two identical long conducting wires $$AOB$$ and $$COD$$ are placed at right angle to each other, with one above other such that $$O$$ is their common point for the two. The wires carry $$I$$1 and $$I$$2 currents, respectively. Point $$P$$ is lying at distance f from $$O$$ along a direction perpendicular to the plane containing the wires. The magnetic field at the point $$P$$ will be
In an ammeter 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance of ammeter will be
A
$${1 \over {499}}G$$
B
$${{499} \over {500}}G$$
C
$${1 \over {500}}G$$
D
$${{500} \over {499}}G$$
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment $$\overrightarrow m .$$ Which configuration has highest net magnetic dipole moment ?