Physics-
General
Easy
Question
The heat dissipated (I2 Rt) in a resistance can be obtained by the measurement of resistance, current and time. If the maximum error in the measurement of these quantities is 1%, 2%, and 1% respectively. The maximum error in the determination of the dissipated heat is -
- 4%
- 6%
- 4/3%
- 2%
The correct answer is: 6%
Related Questions to study
Physics-
The percentage error in the measurement of mass and speed are 2% and 3% respectively. How much will be the maximum error in the estimate of kinetic energy obtained by measuring mass and speed -
The percentage error in the measurement of mass and speed are 2% and 3% respectively. How much will be the maximum error in the estimate of kinetic energy obtained by measuring mass and speed -
Physics-General
Physics-
If energy (E), velocity (v) and force (F), be taken as fundamental quantities, then what are the dimensions of mass -
If energy (E), velocity (v) and force (F), be taken as fundamental quantities, then what are the dimensions of mass -
Physics-General
Physics-
A small square loop wire of side 
is placed inside a large squre loop of side 
If the loops are coplanar and their centres coincide, the mutual induction of the system is directly proportional to
A small square loop wire of side is placed inside a large squre loop of side If the loops are coplanar and their centres coincide, the mutual induction of the system is directly proportional to
Physics-General
Physics-
In a choke coil, the resistance 
and resistance 
are such that
In a choke coil, the resistance and resistance are such that
Physics-General
Physics-
long solenoid having 
resistance and 
inductance is joined to a 
battery. At steady state the current through the solenoid in 
will be
long solenoid having resistance and inductance is joined to a battery. At steady state the current through the solenoid in will be
Physics-General
Physics-
The magnetic field in a coil of 100 turns and 
area is increased from 
to 
in 
. The magnetic field is perpendicular to the coil. The e.m.f. generated in it is
The magnetic field in a coil of 100 turns and area is increased from to in . The magnetic field is perpendicular to the coil. The e.m.f. generated in it is
Physics-General
Physics-
Energy required to establish a current of 4 A in a coil of self-inductance L =200mH is
Energy required to establish a current of 4 A in a coil of self-inductance L =200mH is
Physics-General
Physics-
A rectangular coil of 20 turns and area of cross-section 
has resistance of 
. If a magnetic field which is perpendicular to the plane of the coil changes at the rate of 
per second, the current in the coil is
A rectangular coil of 20 turns and area of cross-section has resistance of . If a magnetic field which is perpendicular to the plane of the coil changes at the rate of per second, the current in the coil is
Physics-General
Physics-
The self induced emf in a coils of 0.4 henry self inductance when current in it is changing at the rate of 50As-1, is
The self induced emf in a coils of 0.4 henry self inductance when current in it is changing at the rate of 50As-1, is
Physics-General
Physics-
A square loop of side enters a magnetic field with 
. The front edge enters the magnetic field at 
then which graph best depicts 
A square loop of side enters a magnetic field with . The front edge enters the magnetic field at then which graph best depicts
Physics-General
Physics-General
Physics-
Average energy stored in a pure inductance 
when a current 
flows through it, is
Average energy stored in a pure inductance when a current flows through it, is
Physics-General
Physics-
If the switch in the following circuit is turned off, then
If the switch in the following circuit is turned off, then
Physics-General
Physics-General
Physics-
The time dependence of a physical quantity P is found to be of the form P =
where t is time and is some constant. Then the constant will -
The time dependence of a physical quantity P is found to be of the form P =where t is time and is some constant. Then the constant will -
Physics-General
Physics-
A dimensionless quantity -
A dimensionless quantity -
Physics-General
Physics-
If x = at + bt2, where x is in metres and t in hours (hr), then unit of b will be -
If x = at + bt2, where x is in metres and t in hours (hr), then unit of b will be -
Physics-General
