1
AIEEE 2002
+4
-1
If an ammeter is to be used in place of a voltmeter, then we must connect with the ammeter a
A
low resistance in parallel
B
high resistance in parallel
C
high resistance in series
D
low resistance in series
2
AIEEE 2002
+4
-1
A wire when connected to $$220$$ $$V$$ mains supply has power dissipation $${P_1}.$$ Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is $${P_2}.$$ Then $${P_2}:{P_1}$$ is
A
$$1$$
B
$$4$$
C
$$2$$
D
$$3$$
3
AIEEE 2002
+4
-1
If in the circuit, power dissipation is $$150W,$$ then $$R$$ is
A
$$2\,\Omega$$
B
$$6\,\Omega$$
C
$$5\,\Omega$$
D
$$4\,\Omega$$
4
AIEEE 2002
+4
-1
The mass of product liberated on anode in an electrochemical cell depends on (where $$t$$ is the time period for which the current is passed).
A
$${\left( {It} \right)^{1/2}}$$
B
$$It$$
C
$$I/t$$
D
$${I^2}t$$
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