Question 1

What is the formula for density?

Accepted Answer

mass/volume

Answer

mass x volume

Answer

volume/mass

Question 2

What is the formula for weight?

Accepted Answer

mass x gravitational field strength

Answer

gravitational field strength/mass

Answer

mass / gravitational field strength

Question 3

what is the formula for average speed?

Accepted Answer

total distance/total time

Answer

total displacement/total time

Answer

total distance x total time

Answer

total displacement x total time

Question 4

what is the formula for average velocity?

Accepted Answer

total displacement/total time

Answer

total displacement x total time

Answer

total distance/total time

Answer

total distance x total time

Question 5

What is the formula for acceleration?

Accepted Answer

(final velocity- initial velocity)/time

Answer

(final velocity- initial velocity) x time

Answer

time/(final velocity- initial velocity)

Question 6

How to calculate resultant force(newton's second law)?

Accepted Answer

resultant force = mass x acceleration

Answer

resultant force = mass / acceleration

Answer

resultant force = acceleration/mass

Question 7

How do you calculate moment?

Accepted Answer

force x perpendicular distance from force to pivot

Answer

force x any distance

Answer

force x distance moved in the direction of the force applied

Question 8

How do you calculate work done?

Accepted Answer

force x distance moved in the direction of the force applied

Answer

force x perpendicular distance from force to pivot

Answer

force x any distance

Question 9

How to calculate kinetic energy?

Accepted Answer

0.5 x mass x (speed)²

Answer

mass x g x height

Answer

0.5 x mass x speed

Answer

mass x g x (height)²

Question 10

How to calculate gravitational potential energy?

Accepted Answer

mass x g x height

Answer

0.5 x mass x speed

Answer

0.5 x mass x (speed)²

Answer

mass x g x (height)²

Question 11

How to calculate pressure exerted?

Accepted Answer

Pressure= Force/Area

Answer

Pressure= Force x Area

Answer

Pressure= Area/Force

Question 12

How to calculate efficiency ?

Accepted Answer

[useful energy converted/input energy] x 100%

Answer

[input energy/useful energy converted] x 100%

Question 13

How to calculate power?

Accepted Answer

Work Done(J)/ time taken(s)

Answer

Force/Area

Answer

Work Done(J)/ time taken(minutes)

Answer

Work Done(J)/ time taken(hours)

Answer

time taken(s)/Work done(J)

Question 14

Which of the following shows the wave equation?(Finding wave speed)

Accepted Answer

wave speed = frequency x wavelength

Answer

wave speed = frequency / wavelength

Answer

wave speed = wavelength/frequency

Question 15

How to calculate speed of sound(direct method, no reflection off wall)

Accepted Answer

speed = distance/time

Answer

speed = [2 x distance]/time

Answer

speed = time/distance

Question 16

How to calculate speed of sound(indirect method, Echo/reflection off wall)

Accepted Answer

speed = [2 x distance]/time

Answer

speed = distance/time

Answer

speed = time/distance

Question 17

How to calculate charge?

Accepted Answer

Charge(C)= current(A) x time(s)

Answer

Charge(C)= current(A) x time(hours)

Answer

Charge(C)= time(s)/Current(A)

Answer

Charge(C)= current(A) x time(minutes)

Answer

Charge(C)= current(A) /time(s)

Question 18

how to calculate voltage(Ohm's law)?

Accepted Answer

Voltage= Current x Resistance

Answer

Voltage= Resistance /Current

Answer

Voltage= Current / Resistance

Answer

Charge = Current x time

Question 19

How to calculate total resistance(R) in series?

Accepted Answer

R=R1+R2+R3

Answer

1/R=1/R1+1/R2+1/R3

Answer

R=R1x R2xR3

Question 20

How to calculate total resistance(R) in parallel?

Accepted Answer

1/R=1/R1+1/R2+1/R3

Answer

R=R1x R2xR3

Answer

R=R1+R2+R3

Question 21

How to calculate potential difference/EMF?

Accepted Answer

Voltage = work done/Charge

Answer

Voltage = Charge/work done

Answer

Voltage = work done x Charge

Question 22

How to calculate electric power?

Accepted Answer

Power = voltage x current

Answer

Power = current/voltage

Answer

Power = voltage / current

Question 23

How to calculate electrical energy?

Accepted Answer

E = Voltage(V) x current (A)x time(s)

Answer

E = Voltage(V) x current (A)x time(minutes)

Answer

E = Voltage(V) x current (A)x time(hours)

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