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प्रश्न
Set up the circuit shown in Figure again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.
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उत्तर
- Set up the Circuit:
- Connect the components as shown in the figure: battery, switch, wire wound around cardboard, and a compass.
- Turn the Switch 'ON':
- Close the switch to 'ON'.
- Observe and note the direction of the compass needle deflection.
- Turn the Switch 'OFF':
- Open the switch to 'OFF'.
- Reverse Battery Connections:
- Swap the positive and negative terminals of the battery.
- Turn the Switch 'ON' Again:
- Close the switch to 'ON'.
- Observe and note the direction of the compass needle deflection again.
- Explanation:
- The compass needle deflects due to the magnetic field created by the current.
- Reversing the battery connections reverses the current direction, thus reversing the magnetic field and the needle's deflection direction.
संबंधित प्रश्न
What do the following symbols mean in circuit diagrams?
Draw a circuit diagram to show how 3 bulbs can be lit from a battery so that 2 bulbs are controlled by the same switch the third bulb has its own switch.
Match the column ‘A’ with column ‘B’.
|
Column ‘A’
|
Column ‘B’ |
|
(1) Eka - boron
|
(a) Germanium
|
|
(2) Eka - Aluminium
|
(b) Scandium
|
|
(3) Eka - Silicon
|
(c) Gallium |
What do you understand by the closed electric circuit
Nowadays MCBs are used in homes, for stop the current in the circuit which suddenly increases.
Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up
Study the three electric circuits below. Each of them has a glass rod (G), a steel rod (S), and a wooden rod (W).
In which of the electric circuits would the bulb not light up.
What are the types of electric circuits?
In the following circuits (Figure), heat produced in the resistor or combination of resistors connected to a 12 V battery will be
 |
 |
 |
| (i) | (ii) | (iii) |
An electric motor rated 1100 W is connected to 220 V mains. Find:
- The current drawn from the mains,
- Electric energy consumed if the motor is used for 5 hours daily for 6 days.
- Total cost of energy consumed if the rate of one unit is 5.
