Physics question and answers for December 30, 2023
- Q 2 14 A 6 volt battery is connected to the terminals of a three metre long wire of uniform thickness and resistance of 100 ohm The difference of potential between...
- Q The reason for preferring manganin wire in potentiometer is because a of high value of its temperature coefficient of resistivity b of its low resistivity c of low value of...
- Q 15 A uniform conductor of resistance R is cut into 20 equal parts Half of them are joined in series and the remaining half of them in parallel If the...
- Q Two wires AB CD each 1m length carry a total charge of 0 2 microcoulomb each and are placed as shown in figure The ends B C are separated 1m...
- Q D A battery of 20 cells is charged by 220 V with a charging current of 15 A If the emf of cell is 2 V and internal resistance is...
- Q In a Wheatstone bridge see fig Resistances P and Q are approximately equal When R 400 22 the bridge is balanced On interchanging P and Q the value of R...
- Q In the circuit shown in the figure two resistor R and R2 have been connected in series to an ideal cell When a voltmeter is connected across R reading is...
- Q 2 Two electric bulbs rated at 25 W 220 V and 100 W 220 V are connected in series across a 220 V voltage source If the 25 W and...
- Q A galvanometer whose resistance is 50 ohm has 25 divisions in it When a current of 4 x 10 4 A passes through it its needle pointer deflects by one...
- Q The actual value of resistance R shown in the figure is 30 2 This is measured in an experiment as shown using the standard formula R where V and I...
- Q 6 In the given circuit the cells have zero internal resistance The currents in amperes passing through resistance R and R respectively are JEE Main 2019 1 1 2 R200...
- Q 1S the conductivity of a semiconducte in 92 m if electron density 5 x 10 2 cm an hole density 8 x 10 3 cm 2 3 V s m...
- Q 87 of Aalhe series combination of two batteries both of the same emf 10 V but different internal resistance of 20 2 and 5 22 is connected to the parallel...
- Q The Wheatstone bridge shown in Fig here gets balanced when the carbon resistor used as R has the colour code Orange Red Brown The resistors R and R are 80...
- Q Q17 An inductor in series with a resistance of 300 2 is connected to a sinusoidal AC voltage supply as shown in the figure What is the resistance of the...
- Q Four resistances 40 92 60 92 90 92 and 110 9 make the arms of a quadrilateral ABCD Across AC is a battery of emf 40 V and internal resistance...
- Q 7 A 2 W carbon resistor is color coded with green black red and brown respectively The maximum current which can be passed through this resistor is JEE Main 2019...
- Q On interchanging the resistances the balance point of a meter bridge shifts to the left by 10 cm The resistance of their series combination is 1 KQ How much was...
- Q Choose the incorrect statement out of the following The relation V IR applies to ohmic as well as non ohmic conductors The relation E oj applies to all conducting O...
- Q 2 In the circuit shown the current in the 12 resistor is JEE Main 2015 6 V 392 1 1 3 A from P to Q 2 0 A 3...
- Q 2 A resistance is shown in the figure Its value and tolerance are given respectively by JEE Main 2019 Red au Violet Orange 1 27 ks 20 3 27 k2...
- Q 5 When a current of 5 mA is passed through a galvanometer having a coil of resistance 15 92 it shows full scale deflection The value of the resistance to...
- Q JEE Main 2018 Two batteries with e m f 12 V and 13 V are connected in parallel across a load resistor of 10 2 The internal resistances of the...
- Q Two conductors of equal volumes having no uniform cross section are joined as shown figure The number density of free electrons more in conductor 2 As current passes throug the...
- Q In the given circuit the internal resistance of the 18 V cells is negligible If R 400 92 R 100 92 and R 500 2 and the reading of an...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!