Question

Question 7
(a) A student learning about electric circuits connects up the circuit shown in figure.
battery
arameter
The student has already made
one mistake with his connections.
What is his mistake?
[1]
coil of
wire
(ii) Draw the circuit diagram of the
arrangement shown in figure.
Using standard symbols.
variable resistor
{rheostat)
[2]
(ii) The student now connects a voltmeter to the circuit, so that readings can be taken to
find the resistance of the coil of wire. On your circuit diagram, draw the voltmeter,
connected to measure the potential difference across the coil.
(b) Having obtained a correctly-working circuit, the readings on the two meters for one setting
of the variable resistor are as shown in figures.
10
4
1.
on
Que
15
AMPS
VOLT9
vos
Record these two readings in your answer script with SI unit.
The slider on the variable resistor is moved a small distance to the left, reducing its
resistance.
Stare what happens to the readings on the two meters.
[2]
The slider is adjusted so that the total resistance in the circuit is double that which
gave the readings in figures.
Calculate the new values of the readings on the meters.​

Answer 1

Answer:

As a result of the rebellion of 1857, the British changed their policies in the following ways: The powers of the East India Company were transferred to the British Crown in order to ensure a more responsible management of Indian affairs.