Maharashtra Board SSC Model Paper Science Chapter 4 Set II
Marks 20
Q.1.True or False (2)
1. Voltmeter
is always connected in series with device.
2. Restivity
of alloys is greater than pure metals.
Q.2.Match the column (2)
A
|
B
|
1. Electric
Current
2. Resistance
3. Heat
4. Power
|
a. I2RT
b. VI
c. V/I
d. Q/t
|
Q.3.Answer the following (8)
1. Give
Reason :Melting point of filament of bulb is high..
2. Give
reason Connecting wires in circuit are made up of copper and aluminium.
3. Differentiate
between :Resistance in series and resistance in parallel
4. Two resistance
of 3 ohms and 6 ohms are connected in parallel. Find the equivalent resistance.
Q.4. Answer the following (8)
1. Derive
an expression for resistance connected in series.
2. Derive
an expression for resistance connected in parallel.