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Satkriti Roao
@satkriti-roao
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Joined: Jun 14, 2021
Last seen: Aug 6, 2021
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Topics: 2248 / Replies: 1
AllTopicsReplies
Topic
Name the device which is used to reverse the direction of current in the coil of a motor.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 76
Topic
For Fleming’s left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 63
Topic
State whether the following statement is true or false: An electric motor converts mechanical energy into electrical energy.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 69
Topic
A motor converts one form of energy into another. Name the two forms.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 69
Topic
Name the device which converts electrical energy into mechanical energy.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 60
Topic
Name one device which works on the magnetic effect of current.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 68
Topic
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 74
Topic
In a statement of Fleming’s left-hand rule, what do the following represent? (a) direction of centre finger. (b) direction of forefinger.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 68
Topic
What happens when a current-carrying conductor is placed in a magnetic field?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 69
Topic
Name one technique which can detect cancerous tissue inside the body of a person.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 67
Topic
Find the volume of a sphere whose surface area is 154 cm^2. (Assume π = 22/7)
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 199
Topic
A hemispherical tank is made up of an iron sheet 1cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank.
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 166
Topic
How many litres of milk can a hemispherical bowl of diameter 10.5 cm hold?
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 437
Topic
The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 124
Topic
The diameter of a metallic ball is 4.2 cm. What is the mass of the ball, if the density of the metal is 8.9 g per cm^3?
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 261
Topic
Find the amount of water displaced by a solid spherical ball of diameter (i) 28 cm (ii) 0.21 m
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 229
Topic
Find the volume of a sphere whose radius is (i) 7 cm (ii) 0.63 m
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 263
Topic
A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas.
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 434
Topic
A right triangle ABC with sides 5cm, 12cm and 13cm is revolved about the side 12 cm. Find the volume of the solid so obtained.
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 153
Topic
A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. Find the volume of the solid so obtained.
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 124
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