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Recent questions tagged power
+3
votes
1
answer
Make a table with the names of 3 electrical appliances used in home in one column,
asked
Apr 7, 2019
in
Class 10
by
kratos
electric energy
household circuits
class-10
icse
power
+1
vote
1
answer
Two bodies, A and B, of equal mass are kept at heights 20m and 30m respectively.
asked
Apr 6, 2019
in
Class 10
by
kratos
work
energy
energy and power
class-10
icse
force
power
+2
votes
1
answer
State the energy changes in the following devices while in use: 1. A loud speaker.
asked
Apr 5, 2019
in
Class 11
by
kratos
work
energy
class-11
energy and power
class-10
icse
force
power
+3
votes
1
answer
What is meant by Work Done by a Constant Force ?
asked
Apr 4, 2019
in
Class 11
by
kratos
work
energy
class-11
power
+3
votes
1
answer
The work done by the force vector F = A(y^2i + 2x^2j), where A is a constant and x & y are in meters around the path shown is:
asked
Apr 4, 2019
in
JEE
by
kratos
work
energy
jee
vectors
class-11
jee mains
power
+3
votes
1
answer
A man lifts a mass of 20 kg to a height of 2.5 m. Assuming that the force of gravity on 1 kg mass is 10 N, find the work done by the man.
asked
Apr 2, 2019
in
Class 11
by
kratos
work
cbse
energy
class-11
class-9
class-10
icse
power
+2
votes
1
answer
Two bulbs are marked 100W, 220V and 60W, 110V. Calculate the ratio of their resistances.
asked
Apr 1, 2019
in
Class 10
by
kratos
bsnl
electric energy
electricity
household circuits
class-10
icse
power
bitsat
+2
votes
1
answer
An arrow is shot from a bow at an angle of 40 from the horizontal at a speed of 24.0 m/*.
asked
Apr 1, 2019
in
JEE
by
kratos
work
work energy and power
energy
jee
kinematics
energy and power
class-10
icse
force
power
jee mains
+3
votes
1
answer
State the energy changes that occur in a watch spring while it unwinds.
asked
Apr 1, 2019
in
Class 11
by
kratos
work
class-8
energy
class-11
class-7
icse
class-10
power
+3
votes
1
answer
An electrical gadget can give an electric shock to its user under certain circumstance. Mention any two of these circumstances.
asked
Mar 31, 2019
in
Class 10
by
kratos
electrical power and household circuits
electric energy
electricity
household circuits
class-10
icse
power
+1
vote
1
answer
A car of mass 2000 kg is lifted up a distance of 30 m by a crane in 1 min. A second crane does the same job in 2 min.
asked
Mar 31, 2019
in
Class 11
by
kratos
work
class-11
energy
energy and power
class-10
icse
power
+3
votes
1
answer
(a) Draw a diagram of ring main circuit for domestic distribution of electric power.
asked
Mar 31, 2019
in
Class 10
by
kratos
electric energy
household circuits
class-10
icse
power
+1
vote
1
answer
An electric oven is marked 1000W – 200V. Calculate : (a) Resistance of its element
asked
Mar 30, 2019
in
Class 10
by
kratos
electric energy
household circuits
class-10
icse
power
+1
vote
1
answer
Why is electrical power required at all when the elevator is descending? Why should there be a limit on the number of passengers in this case?
asked
Mar 30, 2019
in
Class 11
by
kratos
work
work energy and power
class-11
energy
energy and power
class-10
icse
power
+1
vote
1
answer
An electric geyser rated 1500 W, 250 V is connected to 250 V line mains. Calculate:
asked
Mar 28, 2019
in
Class 10
by
kratos
electrical power and household circuits
electricity current
electric energy
electricity
household circuits
class-10
icse
power
+3
votes
1
answer
State the energy changes that take place in the following when they are in use : (1) a photovoltaic cell. (2) an electromagnet.
asked
Mar 28, 2019
in
Class 10
by
kratos
work
energy
class-10
icse
power
+1
vote
1
answer
In a household electric circuit, (a) all electric appliances drawing power are joined in parallel
asked
Mar 28, 2019
in
Class 12
by
kratos
electric energy
household circuits
class-10
icse
power
class-12
electric current in conductors
+1
vote
1
answer
Why is it dangerous to replace a fuse wire with a copper wire?
asked
Mar 27, 2019
in
Class 10
by
kratos
electric energy
household circuits
class-10
icse
power
+3
votes
1
answer
Name the physical quantity measured in terms of horse power.
asked
Mar 26, 2019
in
Class 10
by
kratos
work
energy
class-10
icse
power
+3
votes
1
answer
State the energy changes in the following cases while in use:
asked
Mar 25, 2019
in
Class 10
by
kratos
work
work energy and power
energy
class-10
icse
power
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