enEnglishguગુજરાતી
GUJCET · Physics · Electromagnetic Induction
If the flux associated with a coil of 60 turn varies at the rate of \(1 \frac{Wb}{\text { hour }}\), the induced emf is __________ .
- A \(\frac{1}{3600}\)
- B 1
- C \(\frac{1}{60}\)
- D 0
Answer & Solution
Correct Answer
(C) \(\frac{1}{60}\)
Step-by-step Solution
Detailed explanation
C
\(N =60\) turns
\(\frac{d \phi}{d t}=1 \frac{W b}{\text { hour }}=\frac{1}{3600} \frac{W b}{s}\)
Induced emf \(|\varepsilon|= N \frac{d \phi}{d t}\)
\(\begin{array}{l}|\varepsilon|=60 \times \frac{1}{3600} \\ |\varepsilon|=\frac{1}{60} V\end{array}\)
\(N =60\) turns
\(\frac{d \phi}{d t}=1 \frac{W b}{\text { hour }}=\frac{1}{3600} \frac{W b}{s}\)
Induced emf \(|\varepsilon|= N \frac{d \phi}{d t}\)
\(\begin{array}{l}|\varepsilon|=60 \times \frac{1}{3600} \\ |\varepsilon|=\frac{1}{60} V\end{array}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A domain in a ferromagnetic substance is in form of cube of side length \(2 \mu m\). It contains \(4 \times 10^{14}\) atoms and each atomic dipole has a moment of \(16 \times 10^{-24} Am ^2\), then the magnetization of the domain is then _________ .GUJCET 2013 Hard
- A molecule of a substance has a permanent electric dipole moment of magnitude \(10^{-29} C m\). 2 mole of this substance is polarised (at low temperature) by applying a strong electrostatic fleld of magnitude \(10^6 Vm ^{-1}\). What should be potential energy of its ? (1 mole of substance contains \(6 \times 10^{23}\) molecules.)GUJCET 2022 Easy
- The magnetic susceptibility of a paramagnetic material is \(1.0 \times 10^{-5}\) at \(27^{\circ} C\) temperature. Then at what temperature its magnetic susceptibility would be \(1.5 \times 10^{-5}\) ?GUJCET 2014 Hard
- An electric dipole of dipole moment \(\overrightarrow{\mathrm{P}}\) is placed parallel to the uniform electric field of intensity \(\overrightarrow{\mathrm{E}}\). On rotating it through angle of \(90^{\circ}\) from this situation, the amount of work done is ___________.GUJCET 2026 Medium
- A galvanometer of resistance \(50 \Omega\) is connected to a battery of 8 V along with a resistance of \(3950 \Omega\) in series. A full scale deflection of 30 division is obtained in the galvano meter. In order to reduce this deflection to 15 division the resistance in series should be _________ \(\Omega\).GUJCET 2015 Medium
- A plane electromagnetic wave of frequency \(\mathbf{2 5 ~ M H z}\) travels in free space along the X-direction. At a particular point in space and time, where \(\overrightarrow{\mathrm{B}}=2.1 \times 10^{-8} \hat{k}\) T. Then find \(\overrightarrow{\mathrm{E}}\) at this point.GUJCET 2021 Medium
More PYQs from GUJCET
- Find the time required for a 50 Hz alternating current to become its value from zero to the rms value.GUJCET 2009 Hard
- Using the data given below find out the strongest reducing agent ?
\(\begin{array}{ll}
E_{Cr_2 O_7^{2-} / Cr^{3+}}^0=1.33 V & E_{Cl_2 / Cl^{-}}^0=1.36 V \\
E_{MnO_4^{-}}^0 / Mn^{2+}=1.51 V & E_{Cr^{3+} / Cr}^0=-0.74 V\end{array}\)GUJCET 2021 Medium - A parallel plate capacitor with air between the plates has a capacitance of 1.0 pF. If the distance between the plates is made doubled and space between them is filled with dielectric substance, the capacitance becomes 2.0 pF. Then the value of dielectric constant of dielectric substance is ___________.GUJCET 2026 Hard
- The dimensional formula of \(\sqrt{\mu_{r} \varepsilon_{r}}\) is __________ .GUJCET 2019 Medium
- A colour blind man marries a female with homozygous normal vision. What will be the possibility of colour blindness in their male children?GUJCET 2026 Easy
- Ten identical square metallic plates are arranged as shown in figure. Length of each plate is 1 . The equivalent capacitance of this arrangement would be ________.
GUJCET 2018 Hard