Physics-
General
Easy
Question
Two wires of resistance R1 and R2 have temperature coefficient of resistance 
and 
, respectively. These are joined in series. The effective temperature coefficient of resistance is :
The correct answer is:
Related Questions to study
physics-
In the circuit shown : E = 4.0 V, R1 = 2 
, E1 = 6.0 V, R2 = 4 and R3 = 2 . The current I1 is :
In the circuit shown : E = 4.0 V, R1 = 2 , E1 = 6.0 V, R2 = 4 and R3 = 2 . The current I1 is :
physics-General
physics-
The current flowing through resistance of 2 ohm in the figure is :
The current flowing through resistance of 2 ohm in the figure is :
physics-General
physics-
In the figure, if the ammeter reads 5 A and voltmeter reads 50 V, then the resistance R is :
In the figure, if the ammeter reads 5 A and voltmeter reads 50 V, then the resistance R is :
physics-General
physics-
A voltmeter reading up to 1000 mV is calibrated by a potentiometer. An emf of 1.08 V is balanced across 5.4 m length of the wire. When voltmeter reading is 0.9 V, the balancing length is 4.55 m. The error in the voltmeter reading is :
A voltmeter reading up to 1000 mV is calibrated by a potentiometer. An emf of 1.08 V is balanced across 5.4 m length of the wire. When voltmeter reading is 0.9 V, the balancing length is 4.55 m. The error in the voltmeter reading is :
physics-General
physics-
Which part represents the negative dynamic resistance ?
Which part represents the negative dynamic resistance ?
physics-General
physics-
Variation of current passing through a conductor at the voltage applied across its ends is varied as shown in the adjoining diagram. If the resistance is determined at the points A, B, C and D, we will find that resistances at :
Variation of current passing through a conductor at the voltage applied across its ends is varied as shown in the adjoining diagram. If the resistance is determined at the points A, B, C and D, we will find that resistances at :
physics-General
physics-
In the network shown in the figure, each resistance is 1 . The effective resistance between A and B is:
In the network shown in the figure, each resistance is 1 . The effective resistance between A and B is:
physics-General
physics-
In the circuit diagram, the potential difference across the plates of the capacitor C is :
In the circuit diagram, the potential difference across the plates of the capacitor C is :
physics-General
physics-
The equivalent resistance of the network shown in the figure between the points A and B is :
The equivalent resistance of the network shown in the figure between the points A and B is :
physics-General
physics-
In the arrangement of resistances shown in the figure, the potential difference between the points B and D will be zero when the unknown resistance X is :
In the arrangement of resistances shown in the figure, the potential difference between the points B and D will be zero when the unknown resistance X is :
physics-General
physics-
What will be the equivalent resistance between the two points A and D ?
What will be the equivalent resistance between the two points A and D ?
physics-General
physics-
In the circuit diagram shown below, the magnitude and direction of the flow of current respectively would be:
In the circuit diagram shown below, the magnitude and direction of the flow of current respectively would be:
physics-General
physics-
In the given current distribution, what is the value of I ?
In the given current distribution, what is the value of I ?
physics-General
physics-
The current in the branch CD in the circuit shown below will be :
The current in the branch CD in the circuit shown below will be :
physics-General
physics-
In the following figure, the reading of the ammeter A, when the internal resistance of the battery is zero is :
In the following figure, the reading of the ammeter A, when the internal resistance of the battery is zero is :
physics-General
