Advertisements
Advertisements
Question
Find the odd one out and give its explanation.
Options
Temperature
Conduction
Convection
Radiation
Solution
Temperature
Explanation-
Temperature is a degree of hotness while conduction, convection, and radiation are modes of heat transfer.
APPEARS IN
RELATED QUESTIONS
What do the following symbols mean in circuit diagrams?
Draw circuit symbols for
a battery of three cells
Draw circuit symbols for
an open switch
Draw circuit symbols for
A closed switch
How does the short circuit form? What is its effect?
Who will spend more electrical energy? 500 W TV Set in 30 mins, or 600 W heater in 20 mins?
In an electric circuit, electron flow a from of point of ______ potential to the point of ______ potential.
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 open electric circuit?
In any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot?
Increasing the current passing through the wire decreases the magnetic field intensity.
______ is the device used to close or open an electric circuit.
The switch is used to close or open an electric circuit.
Draw the circuit diagram for the series connection.
Draw the circuit diagram for the following series connection
Which of the following a simple circuit must-have?
Three bulbs are connected end to end from the battery. This connection is called _______.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
In a simple circuit, why does the bulb glow when you close the switch?
The wiring in a house consists of ______ circuits.
Explain about domestic electric circuits. (circuit diagram not required)
Instead of metal wires, a jute string can be used to make a circuit.
In an electrical circuit two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be
A child has drawn the electric circuit to study Ohm’s law as shown in Figure. His teacher told that the circuit diagram needs correction. Study the circuit diagram and redraw it after making all corrections.
In an electric circuit a fuse is a _________ _______ to prevent possible fire.
Draw the symbols of the following circuit components.
switch in off position
Match the following
| 1. | Insulator | a. | Coulomb |
| 2. | Conductor | b. | Electric circuit |
| 3. | Closed path | c. | Copper |
| 4. | Electric charge | d. | Rubber |
Paheli is running short of connecting wires. To complete an electric circuit, she may use a
Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.
Name the device which is used to measure the strength of the electric current in an electric circuit.
A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire
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.
